Need help with box design. 4 12s

[99blazer]

i want to stick to slot port and have the port facing the back. i could have the 25 inches in hieght and 28 inches deep and i can squeeze and inch or too on the width but no more 38 on the width

[fecupe2001]

Blazers are loud with port back or port side, 25" height it´s ridiculous lol

I would do:

20" H x 38"W x 28"D

Port: 36.5"W x 3.25"H x 20"D

That would give you about 8.4 c/f after displacement and 35 hz tuning with 118SQ of port, that box would do some serious business with those 4 subs

[99blazer]

that would be tuned at 36hz. If i extend the depth of the port 2 inches itd be 35hz

[Joe X]

that would be tuned at 36hz. If i extend the depth of the port 2 inches itd be 35hz

Ok went to 30d (check the design post) with your tuning, if you have 4.5 in in front of the port then you are ok.

[99blazer]

yea my depth would have to be 28 to be 4.5 inches away from the door

[Joe X]

yea my depth would have to be 28 to be 4.5 inches away from the door

Changed to 28d and 23.5h..

[fecupe2001]

DD´s don´t need low tuning at all, our nissan almera´s box is tuned to 39 hz and goes down to 27 hz without any problems, my 1510´s box tuned to 39 hz could do hairtricks @ 30 hz, etc etc , but anyways, if you want a 35 hz tuning so badly then yes, add some lenght i guess...

[99blazer]

every box ive made has been between 32-36 and ive been real pleased with them